Axially corrugated feed horn for the next generation very large array (ngVLA) band-5 receiver

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DOI	Trouver le DOI : https://doi.org/10.1109/OJAP.2025.3572811
Auteur	Rechercher : Hesari, S. Salem¹Identifiant ORCID : https://orcid.org/0009-0004-1613-7068; Rechercher : Veidt, B.¹Identifiant ORCID : https://orcid.org/0000-0003-3182-2720; Rechercher : Henke, D.¹Identifiant ORCID : https://orcid.org/0000-0001-7732-5178; Rechercher : DuVerneay, B.; Rechercher : Vijayamohanan, J.Identifiant ORCID : https://orcid.org/0000-0001-5082-6212; Rechercher : Christodoulou, C. G.Identifiant ORCID : https://orcid.org/0000-0002-9306-8666; Rechercher : Grammer, W.; Rechercher : Densmore, A.¹
Affiliation	Conseil national de recherches Canada. Herzberg en astronomie et en astrophysique
Format	Texte, Article
Sujet	feed horn; corrugated feed; axially corrugated horn; ngVLA; radio astronomy; band-5; Q-band; antenna
Résumé	This paper introduces a novel axially corrugated feed horn designed for the ngVLA Band-5 receiver, covering the 30–50 GHz range with potential adaptability to nearby bands. The horn features a circular waveguide with a flared throat and six precisely engineered quarter-wavelength corrugations. This structure achieves exceptional performance, including a return loss better than 25 dB and an average aperture efficiency of 95.5% across the full bandwidth. Measurements confirm the simulated results, validating the design. Compared to existing solutions, this feed horn offers a unique combination of wide bandwidth, high efficiency, and excellent signal fidelity in a compact, easily manufacturable form. These advancements address multiple challenges in radio astronomy receiver design, supporting the next generation of high-sensitivity telescopes like the ngVLA.
Date de publication	2025-05-23
Maison d’édition	IEEE
Licence	Creative Commons, Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/deed.fr
Dans	IEEE Open Journal of Antennas and Propagation (23 mai 2025) : 1–15.
Langue	anglais
Sous presse	Oui
Publications évaluées par des pairs	Oui
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	33f101c1-501c-4ecf-a14f-f9b12edb8f8d
Enregistrement créé	2025-09-09
Enregistrement modifié	2025-11-04

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